From the Census Bureau FAQ
When creating Dynamically generated tables, maps, and files from data.census.gov always include:
U.S. Census Bureau; American Community Survey, 2018 American Community Survey 1-Year Estimates, Table B01003; generated by John Smith; using data.census.gov; <https://data.census.gov/cedsci/> (8 April 2020).
U.S. Census Bureau; Economic Annual Surveys, Table CB1700CBP; generated by Jane Jones; using data.census.gov; <https://data.census.gov/cedsci/> (1 April 2020).
When using Social Explorer to generate maps or data tables use the following format examples:
Title of map, dates. Social Explorer, permalink URL (based on data from <identify data source>; date accessed).
Population Density, 1960. Social Explorer, (based on data from U.S. Census Bureau; accessed Jul 27 17:16:03 EST 2010).
Data source. Title of table, dates. Prepared by Social Explorer. permalink URL (date accessed).
U.S. Census Bureau. Population Density, 1960. Prepared by Social Explorer. (accessed Jul 27 13:58:03 EST 2010).
All examples are from Social Explorer's "How do I cite information on Social Explorer" FAQ
RefWorks is an online research management, writing, and collaboration tool designed to help researchers gather, manage, store, and share information and generate citations and bibliographies.
From Chicago Manual of Style 17th Edition - 14.237 Citing Maps
1. Samuel de Champlain, cartographer, Carte geographique de la Nouvelle Franse, 1612, 43 × 76 cm, in The History of Cartography, vol. 3, Cartography in the European Renaissance (Chicago: University of Chicago Press, 2007), fig. 51.3.
2. Satellite view of Chicago, Google Earth, accessed April 2, 2016, https://firstname.lastname@example.org,-87.723154